linux-kernel - [PATCH v2 3/5] perf test trace: Stop tracing hrtimer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250518190957.58932-4-howardchu95@gmail.com>
Date: Sun, 18 May 2025 12:09:55 -0700
From: Howard Chu <howardchu95@...il.com>
To: acme@...nel.org
Cc: mingo@...hat.com,
	namhyung@...nel.org,
	mark.rutland@....com,
	alexander.shishkin@...ux.intel.com,
	jolsa@...nel.org,
	irogers@...gle.com,
	adrian.hunter@...el.com,
	peterz@...radead.org,
	kan.liang@...ux.intel.com,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Howard Chu <howardchu95@...il.com>
Subject: [PATCH v2 3/5] perf test trace: Stop tracing hrtimer_setup event in trace enum test

The event 'timer:hrtimer_setup' is relatively new, for older kernels,
perf trace enum tests won't run as the event 'timer:hrtimer_setup'
cannot be found.

It was originally called 'timer:hrtimer_init', before being renamed in:

commit 244132c4e577 ("tracing/timers: Rename the hrtimer_init event to hrtimer_setup")

Using timer:hrtimer_start should be enough for current testing, and
hopefully 'start' won't be renamed in the future.

Before:
    $ sudo /tmp/perf test enum -vv
    107: perf trace enum augmentation tests:
    107: perf trace enum augmentation tests                              : Running
    --- start ---
    test child forked, pid 786187
    Checking if vmlinux exists
    Tracing syscall landlock_add_rule
    Tracing non-syscall tracepoint timer:hrtimer_setup,timer:hrtimer_start
    [tracepoint failure] Failed to trace timer:hrtimer_setup,timer:hrtimer_start tracepoint, output:
    event syntax error: 'timer:hrtimer_setup,timer:hrtimer_start'
			 \___ unknown tracepoint

    Error:  File /sys/kernel/tracing//events/timer/hrtimer_setup not found.
    Hint:   Perhaps this kernel misses some CONFIG_ setting to enable this feature?.

    Run 'perf list' for a list of valid events

     Usage: perf trace [<options>] [<command>]
	or: perf trace [<options>] -- <command> [<options>]
	or: perf trace record [<options>] [<command>]
	or: perf trace record [<options>] -- <command> [<options>]

	-e, --event <event>   event/syscall selector. use 'perf list' to list available events
    ---- end(-1) ----
    107: perf trace enum augmentation tests                              : FAILED!

After:
    $ sudo /tmp/perf test enum -vv
    107: perf trace enum augmentation tests:
    107: perf trace enum augmentation tests                              : Running
    --- start ---
    test child forked, pid 808547
    Checking if vmlinux exists
    Tracing syscall landlock_add_rule
    Tracing non-syscall tracepoint timer:hrtimer_start
    ---- end(0) ----
    107: perf trace enum augmentation tests                              : Ok

Signed-off-by: Howard Chu <howardchu95@...il.com>
---
 tools/perf/tests/shell/trace_btf_enum.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/trace_btf_enum.sh b/tools/perf/tests/shell/trace_btf_enum.sh
index f59ba34fac4c..c37017bfeb5e 100755
--- a/tools/perf/tests/shell/trace_btf_enum.sh
+++ b/tools/perf/tests/shell/trace_btf_enum.sh
@@ -5,7 +5,7 @@
 err=0
 
 syscall="landlock_add_rule"
-non_syscall="timer:hrtimer_setup,timer:hrtimer_start"
+non_syscall="timer:hrtimer_start"
 
 TESTPROG="perf test -w landlock"
 
-- 
2.45.2